<template>
    <div class="wrapper">
        <v-head></v-head>
        <v-sidebar></v-sidebar>
        <div class="content-box" :class="{'content-collapse':collapse}">
            <v-tags></v-tags>
            <div class="content" :class="isFull ? 'fixed' : ''">
                <transition name="move" mode="out-in">
                    <keep-alive :include="tagsList">
                        <router-view></router-view>
                    </keep-alive>
                </transition>
                <el-backtop target=".content"></el-backtop>
            </div>
        </div>
    </div>
</template>

<script>
import vHead from './Header.vue';
import vSidebar from './Sidebar.vue';
import vTags from './Tags.vue';
import bus from './bus';
import eventBus from '@/eventBus.js';

export default {
    data() {
        return {
            tagsList: [],
            collapse: false,
            isFull: false
        };
    },
    components: {
        vHead,
        vSidebar,
        vTags
    },
    created() {
        if (!localStorage.getItem('CLIENT_NO')) {
            this.$router.push({
            path: '/login'
          })
        }
        bus.$on('collapse-content', msg => {
            this.collapse = msg;
        });
        // 只有在标签页列表里的页面才使用keep-alive，即关闭标签之后就不保存到内存中了。
        bus.$on('tags', msg => {
            let arr = [];
            for (let i = 0, len = msg.length; i < len; i++) {
                msg[i].name && arr.push(msg[i].name);
            }
            this.tagsList = arr;
        });
        // 全屏
        eventBus.$on('contentToFullScreen', () => {
            this.isFull = true;
        })
        // 退出全屏
        eventBus.$on('contentToDefaultScreen', () => {
            this.isFull = false;
        })
    }
};
</script>

<style scoped lang="less">
.content.fixed {
    position: fixed;
    top: -12px;
    left: -10px;
    right: -10px;
    height: calc(100% + 24px);
    z-index: 9999;
}
</style>
